Answer:639
Step-by-step explanation:
The equation for exponential growth is: initial amount( 1 + rate in decimal form)^time
So we put in our numbers and it is: 412( 1 + 0.5) ^ 9 = 639 (rounded)
I know this is late but I hope I helped anyone who's looking for an explanation now!
To estimate the number of members on a social website after 9 months with a 5% monthly growth rate, use the formula for exponential growth. After calculations, there will be approximately 639 members after 9 months.
Explanation:The question is related to exponential growth, which is a topic in mathematics. To calculate the number of members on a social website after 9 months given a monthly growth rate of 5%, you can use the formula for exponential growth:
Future Value = Present Value * (1 + growth rate)^number of periods
In this case, the Present Value is 412 members, the growth rate is 5%, or 0.05 when expressed as a decimal, and the number of periods is 9 months. Plugging these values into the formula gives:
Future Value = 412 * (1 + 0.05)^9
Calculating this gives:
Future Value ≈ 412 * (1.05)^9 ≈ 412 * 1.55132822 ≈ 639.25
After rounding to the nearest whole number, there will be approximately 639 members on the social website after 9 months.
When mrs. myles gave a test, the scores were normally distributed with a mean of 72 and a standard deviation of 8. this means that 95% of her students scored between which two scores?
Write a polynomial function of minimum degree with real coefficients whose zeros include those listed. Write the polynomial in standard form.
7, -11, and 2 + 6i
f(x) = x4 - 53x2 + 468x - 3080
f(x) = x4 - 9x3 - 42x2 + 234x - 3080
f(x) = x4 - 117x2 + 468x - 3080
f(x) = x4 - 9x3 + 42x2 - 234x + 3080
The polynomial function of minimum degree with real coefficients that has the zeros 7, -11, and 2 + 6i is obtained by also including the conjugate zero 2 - 6i and multiplying the corresponding factors. The proper polynomial is found after multiplying these factors and simplifying, but the given options do not match the correct polynomial. There may be an error in the given options.
Explanation:To write a polynomial function of minimum degree with real coefficients given the zeros 7, -11, and 2 + 6i, we must remember that complex zeros in polynomials with real coefficients always come in conjugate pairs. Therefore, the conjugate of 2 + 6i, which is 2 - 6i, must also be a zero of the polynomial.
First, we write a factor for each zero: (x - 7), (x + 11), (x - (2 + 6i)), and (x - (2 - 6i)). Multiplying these factors together will give us the required polynomial:
(x - 7)(x + 11)((x - 2) - 6i)((x - 2) + 6i)After multiplying and simplifying these factors, and combining like terms, the polynomial function in standard form with these zeros and with real coefficients is:
f(x) = x´ - 9x³ + 42x² - 154x + 3080
However, none of the given options match the correct polynomial derived from the provided zeros. It's possible there was a mistake in the multiplication or combining like terms, or there is an error in the options provided.
Find the value of y in the sequence 2, 8, 3y +5,...
1. If the sequence was arithmetic
2. If the sequence was geometric
In an arithmetic sequence, the common difference is constant. In a geometric sequence, the terms are obtained by multiplying the previous term by a constant ratio. In this case, the value of y in the sequence is 3 for an arithmetic sequence and 9 for a geometric sequence.
Explanation:In an arithmetic sequence, the difference between consecutive terms is constant. To find the value of y in the sequence 2, 8, 3y + 5, we observe that the common difference is 8 - 2 = 6. Therefore, we can set up the equation 8 - 2 = 3y + 5 - 8 to solve for y. Simplifying, we get 6 = 3y - 3. Solving for y, we have y = 3.
In a geometric sequence, each term is obtained by multiplying the previous term by a constant ratio. To find the value of y in the sequence 2, 8, 3y + 5, we need to determine the common ratio. We can see that the ratio between 8 and 2 is 8/2 = 4. Therefore, we can set up the equation 8/2 = (3y + 5)/8 to solve for y. Simplifying, we get 4 = (3y + 5)/8. Multiplying both sides by 8, we have 32 = 3y + 5. Solving for y, we get y = 9.
In the image, point A is the center of the circle. Which two line segments must be equal in length?
AH¯¯¯¯¯ and BC¯¯¯¯¯
HI¯¯¯¯ and BC¯¯¯¯¯
EF¯¯¯¯¯ and HI¯¯¯¯
EF¯¯¯¯¯ and AI¯¯¯¯
Answer: [tex]\overline{EF}=\overline{HI}[/tex]
Step-by-step explanation:
Given: In the image, point A is the center of the circle.
Therefore every straight line segments passing from one to another point of circle through the center of circle A is the diameter of the circle.
Since, [tex]\overline{EF}[/tex] and [tex]\overline{HI}[/tex] are the line segments passing from side to side of circle through the center of circle A is the diameter of the circle, then both are representing diameter of the given circle.
Since, all the diameter of a circle has a unique length .
Hence, the line segments must be equal in length :
[tex]\overline{EF}=\overline{HI}[/tex]
Write 4.4354 correct to 2 decimal places
The number 4.4354 correct to 2 decimal places is 4.44. The third digit, 5, indicates that the second decimal place is rounded up.
Explanation:The question is asking to write the number 4.4354 correct to 2 decimal places. When you're rounding a number to a certain number of decimal places, you look at the digit in the next spot decimal place. In this case, for two decimal places, we look at the third decimal. If this number is 5 or above, we 'round up' the second decimal place by one digit. If it is less than 5, we leave it as is. The third digit in this case is 5, so we 'round up' meaning the number 4.4354 written correct to 2 decimal places is 4.44.
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Let f(x) = 8x3 - 28x + 61 and g(x) = 2x + 5. Find f(x) / g(x)
The result of the division is:
[tex]\[\boxed{4x^2 - 10x + 11 + \frac{6}{2x + 5}}\][/tex]
To find [tex]\( \frac{f(x)}{g(x)} \)[/tex] where [tex]\( f(x) = 8x^3 - 28x + 61 \)[/tex] and [tex]\( g(x) = 2x + 5 \)[/tex], we need to perform polynomial division.
Polynomial Division
1. Divide the leading term of the dividend by the leading term of the divisor:
[tex]\[ \frac{8x^3}{2x} = 4x^2 \][/tex]
2. Multiply the entire divisor by this result and subtract from the dividend:
[tex]\[ 8x^3 - 28x + 61 - (4x^2 \cdot (2x + 5)) = 8x^3 - 28x + 61 - (8x^3 + 20x^2) \][/tex]
Simplifying, we get:
[tex]\[ -20x^2 - 28x + 61 \][/tex]
3. Repeat the process with the new polynomial:
[tex]\[ \frac{-20x^2}{2x} = -10x \][/tex]
4. Multiply the entire divisor by this result and subtract:
[tex]\[ -20x^2 - 28x + 61 - (-10x \cdot (2x + 5)) = -20x^2 - 28x + 61 - (-20x^2 - 50x) \][/tex]
Simplifying, we get:
[tex]\[ 22x + 61 \][/tex]
5. Repeat the process again:
[tex]\[ \frac{22x}{2x} = 11 \][/tex]
6. Multiply the entire divisor by this result and subtract:
[tex]\[ 22x + 61 - (11 \cdot (2x + 5)) = 22x + 61 - (22x + 55) \][/tex]
Simplifying, we get:
[tex]\[ 6 \][/tex]
Putting it all together, we have:
[tex]\[\frac{f(x)}{g(x)} = 4x^2 - 10x + 11 + \frac{6}{2x+5}\][/tex]
So, the result of the division is:
[tex]\[\boxed{4x^2 - 10x + 11 + \frac{6}{2x + 5}}\][/tex]
"Find the constants m and b in the linear function f(x) = mx + b so that f(2) = 10 and the straight line represented by f has slope -5."
f(x) = mx + b m = slope = -5 f(2) = 10 = (-5)(2) + b b = 10 + 10 = 20 Ans. m=-5, b = 20
The initial number of veiws for a reader board was 25. The number of views is growing at a rate of 18% per week.
What is the number of views expected to be four weeks from now?
Round to the nearest whole number.
Answer:
The answer is 48
Step-by-step explanation:
At the time of 0 there are 25 views are exist for a reader board. If the growing rate is %18 than;
[tex]25*1,18=29,5[/tex]
There is no 0,5 view is exist than we need to round up to 30. 30 views for a reader board are exist. Than we need to repeat it for future three weeks.
[tex]30*1,18=35,4[/tex]
Second week its 35
[tex]35*1,18=41,3[/tex]
Third week its 41
[tex]41*1,18=48,38[/tex]
Forth week it goes up to 48 views.
What mathematical relationship exists between human population and time
round 0.7008 to the greatest nonzero place
The number 0.7008 rounded to the greatest non zero place is 1.
What is rounding of digit?Rounding is a process to estimate a particular number in a context.
To round a number look at the next digit in the right place, if the digit is less than 5, round down and if the digit is 5 or more than 5, roundup.
Now the given number is,
0.7008
To round the number to the greatest non zero place.
The greatest non zero digit in the number 0.7008 is 0.
The digit '0' in the given number is at ones place.
So, we will round the number 0.7008 to the nearest ones place.
Since, the digit to right the ones place that is tenths place is 7, which is greater than 5.
So, the digit will roundup to 1.
Thus, the number 0.7008 rounded to the greatest non zero place is 1.
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Expand (4x-3y)^4 using pascal's triangle ...?
Which is bigger, 0.25 or 0.6?
Talia took the bus from her home to the bank and then walked back to her home along the same route. The bus traveled at an average speed of 40 km/h and she walked at an average speed of 5 km/h. To determine the time, x, that it took Talia to walk home, she used the equation 40(0.9 – x) = 5x.
Talia took approximately 0.8 hours, or 48 minutes, to walk home.
Explanation:To determine the time it took Talia to walk home, we can solve the equation
40(0.9 – x) = 5x.
First, distribute the 40 to get 36 - 40x = 5x.
Combine like terms to get 36 = 45x.
Divide both sides by 45 to solve for x.
Therefore, Talia took approximately 0.8 hours, or 48 minutes, to walk home.
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To solve the equation 40(0.9 – x) = 5x, distribute 40, combine like terms, and solve for x. Talia took 0.8 hours or 48 minutes to walk home.
Explanation:The subject of this question is Mathematics and the grade level is High School.
To solve the equation 40(0.9 – x) = 5x, we can start by distributing 40 to the terms inside the parentheses: 36 – 40x = 5x.
Then, we combine like terms by adding 40x to both sides: 36 = 45x.
Finally, we divide both sides by 45 to find that x = 36/45 = 0.8.
Therefore, it took Talia 0.8 hours, or 48 minutes, to walk home.
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How to expand 5x(5 3x)?
Which ordered pairs lie on the graph of the exponential function f(x)=128(0.5)x Question 1 options:
(0, 1)
(1, 64)
(3, 16)
(8, 0.5)
The ordered pairs lie on the graph of the exponential function is (3, 16).
What is Exponential Function?The formula f(x) = [tex]a^x[/tex]defines an exponential function, where x is the input variable as an exponent. The exponential curve is determined by the exponential function and the value of x.
We have,
f(x) = 180 (0.5[tex])^x[/tex]
Now, for x = 0,
So, f(x) = 128(0.5[tex])^0[/tex]
= 128(1)
= 128
Now, for x = 1,
f(x) = 128(0.5[tex])^1[/tex]
= 128(0.5)
= 256
Now, for x = 3,
f(x) = 128(0.5[tex])^3[/tex]
= 128(1/8)
= 16
So, the correct ordered pair is (3, 16).
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salina was at a party and she noticed that the room had 54 balloons. for every red balloon there were 2 yellow balloons and 3 blue balloons. how many blue balloons were there?
Answer:
27 blue balloons
Step-by-step explanation:
Salina was at a party and she noticed that the room had 54 balloons.
For every red balloon there were 2 yellow and 3 blue balloons.
This is written in the form of ratio as = 1 : 2 : 3
First we calculate the number of red balloon.
54 / (1 + 2 + 3)
= 54 / 6 = 9 red balloons
For every red balloons there were 3 blue balloons.
Therefore, Blue balloons = 9 × 3 = 27 blue balloons
27 blue balloons were in the room.
Ariel wants to write 8 entries for her blog. After 2 hours, she has 5 entries left. After 4 hours, she has 2 entries left. Which graph represents Ariel's remaining entries?
graph of line going through (0, 0) with a slope of 1.5
graph of line going through (0, 2) with a slope of 2
graph of line going through (0, 8) with a slope of 1.5
graph of line going through (0, 3) with a slope of 3
Let x be a time in hours and y be an amount of remaining entries. You have that:
At start Ariel wants to write 8 entries for her blog. This means that x=0 and y=8 (0 entries were written). The point with coordinates (0,8) belongs to needed graph.After 2 hours, she has 5 entries left. This gives you that at x=2, y=5 and graph passes through the point (2,5).After 4 hours, she has 2 entries left. This gives you that at x=4, y=2 and graph passes through the point (4,2).Find the slope of the line that is passing through the points [tex] (x_1,y_1)[/tex] and [tex] (x_2,y_2)[/tex] by formula
[tex] \dfrac{y_2-y_1}{x_2-x_1}.[/tex]
Thus, the slope is
[tex] \dfrac{5-2}{2-4}=-1.5.[/tex]
Answer: graph of line going through (0, 8) with a slope of -1.5
An airplane flies 3/4 of a mile in 1/8 of a minute what is the airplane speed in miles per minute
Answer:
Step-by-step explanation:
Use proportions to figure this out. On the top you'll have miles and on the bottom you'll have minutes. I am going to change 3/4 to .75 and 1/8 to .125:
[tex]\frac{miles}{minute}:\frac{.75}{.125}[/tex]
We want to know how many miles per 1 minute that is. So we have the unknown on top in a new ratio, with 1 on the bottom:
[tex]\frac{miles}{minute}:\frac{.75}{.125}=\frac{x}{1}[/tex]
This second ratio is allowing us to calculate what the decimal ratio is in miles per 1 minute. Cross multiply to get
.125x = .75 so
x = 6 miles
That tells us that the decimal ratio is equivalent to 6 miles per minute
Which of the following is equivalent to 4.5 m?
Select one:
a. 450 km
b. 450 cm
c. 0.45 km
d. 45 cm
A regular pentagon and a square share a mutual vertex B. The sides AB and BC are sides of a third polygon with vertex B. How many sides does this polygon have?
In a regular pentagon with equal sides and angles, the sum of the inside angles is 540 degrees. The third polygon P has 6 sides.
What is the Pentagon?In a regular pentagon with equal sides and angles, the sum of the inside angles is 540 degrees, and each angle is 108 degrees. Some actual items, including stars, soccer balls, and even street signs, contain pentagons.
Since P has a vertex at B, we can assume that its other sides emanate from B. Let's call the length of one of these sides x. Since the angle formed by AB and BC is a right angle, we can use the Pythagorean theorem to find the length of AC, which is the hypotenuse of the right triangle ABC:
AC² = AB^²+ BC²= s² + s² = 2s²
AC = √(2s²) = s x √(2)
Now, we can use the fact that AB and BC are sides of a regular pentagon and a square, respectively, to find the value of x. Since a regular pentagon has five sides of equal length, we know that AB is also a side of the Pentagon. Therefore:
AB = s
Similarly, since a square has all sides of equal length, we know that BC is also a side of the square. Therefore:
BC = s
Now, we can use the fact that the sum of the interior angles of a polygon with n sides is (n-2) x 180 degrees to find the value of n for polygon P. Since P has one right angle at B and two angles of 108 degrees (since a regular pentagon has interior angles of 108 degrees),
Set up the following equation:
90 + 108 + 108 + (n-3)180 = 180n
Simplifying, we get:
n = (540-90-108-108)/(180-180) + 3
n = 6
Therefore, the third polygon P has 6 sides.
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Brandon has two 9 cookies. Natalie has 2 less than cookies than Brandon. How many cookies does Natalie have ?
pleas help this problem
Answer: she needs to complete 8 more paintings
Step-by-step explanation:every month she completes 5 paintings
it has beeen 6 months
6*5=30 paintings
needs 38
38-30=8 paintings more
-(2.1c-4d). simplify the expression
Express the area of this triangle as a monomial.
(picture below)
A. 28x^2
B. 1x
C. 11x^2
D. 14x^2
Right isosceles triangles are similar.
Always
Sometimes
Never
Answer:
always
I just did it on my website
Joey had a summer job mowing lawns for 4 weeks. he made a total of $440. approximately how much did he make each week?
Answer: $110
Step-by-step explanation: $110 is the correct approximation. The easiest way is to divide the total by 4, since 25% represents 1 /4 .
Sarah is bringing 12 cupcakes to a party and Bob is bringing another 8 cupcakes to a party. There will be a total of 10 people at the party. How many cupcakes can each person have at the party?
1. What is the slope of the line that passes through the points (-2, 5) and (1, 4)?
a. -3
b. -2
c. -1/3
d. 1/3
2. A line has a slope -5/3. Through which two points could this line pass?
a. (12,13) (17, 10)
b. (16, 15) (13, 10)
c. (0, 7) (3, 10)
d. (11, 13) (8, 18)
3. The pair of points (6,y) and (10, -1) lie on a line with slope 1/4. What is the value of y?
a. -5
b. -2
c. 2
d. 5
4. What is the slope of a vertical line?
a. -1
b. 0
c. 1
d. Undefined
5. The table below gives the best cost per person to rent a fishing charter boat. Find the rate of change given that it is a constant. Also explain what the rate of change means for this situation.
People l Cost ($)
2 l 110
3 l 165
4 l 220
5 l 275
a. 1/55
b. 110/1
c. 1/275
d. 55/1
The slope between points (-2, 5) and (1, 4) is -1/3. The pair of points (16, 15) and (13, 10) could lie on a line with a slope of -5/3. For a line with slope 1/4 passing through (6, y) and (10, -1), the value of y is 2. The slope of a vertical line is undefined. The rate of change in the charter boat cost is $55 per additional person.
Explanation:The slope of a line passing through two points can be found using the formula slope = (y2 - y1) / (x2 - x1). For the points (-2, 5) and (1, 4), the slope is (4 - 5) / (1 - (-2)) = -1 / 3, which is choice c, -1/3. For a line with a slope of -5/3, we can pick two points and use the slope formula to verify that the slope between them is -5/3. For example, using points (16, 15) and (13, 10), the slope would be (10 - 15) / (13 - 16) = -5 / -3, which is indeed 5/3, making choice b, (16, 15) (13, 10), correct.
For a pair of points (6, y) and (10, -1) lying on a line with slope 1/4, we can set up the equation 1/4 = (-1 - y) / (10 - 6) and solve for y to find that y = 2, so the answer is choice c, 2. The slope of a vertical line is undefined because the change in x is zero, hence choice d, Undefined, is the correct answer.
For the fishing charter boat cost problem, the rate of change or the cost per additional person is the difference in cost divided by the difference in the number of people. For example, for 3 and 2 people, the rate is (165 - 110) / (3 - 2) = 55, so the rate of change is 55 dollars per additional person, which is choice d, 55/1. This rate of change represents the additional cost for each extra person joining the fishing charter.
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the length of lisa's rectangular dining room is 12 feet. if the area of the room is at least 96 square feet, what is the smallest width the room could have?
Stephan' sculpture is 7/12 foot tall. He attaches it to a base that is 1/3 foot tall. How tall, in feet, is the sculpture with the base?
Final answer:
To find the total height of Stephan's sculpture with the base, we add the heights represented by fractions with a common denominator to get an overall height of 11/12 feet.
Explanation:
To determine the overall height of Stephan's sculpture with the base, we simply need to add the height of the sculpture to the height of the base. The sculpture is 7/12 foot tall and the base is 1/3 foot tall. To add these two fractions together, we need to find a common denominator, which is 12 in this case. So, we convert 1/3 foot into 4/12 foot. Now we can add the two fractions:
7/12 + 4/12 = 11/12 feet
Therefore, the combined height of the sculpture and the base is 11/12 feet.